Metaphors, allegory and meaning

I'll go with you on the coals of shame.

Sometimes though the coals become real, the Christian Warrior dons his battle garb and heads out to wherever to kill some people. Is it really workable to not have wars? According to Romans when we get a 9/11 we should be nice to Osama, we should feed and water him and make him feel ashamed. Or is there perhaps another section of The Bible that says that war is ok?

My point is, that according to The Bible it is good to heap coals of shame on folks heads, it is also good to heap real coals on folks heads depending upon circumstances. How do you interpret the piece of The Bible that you are reading? And can the meaning of it to you change over time or as you grow older and (hopefully) wiser? And if the meaning changes does that mean you got it wrong in the first place?

Does every single human being interpret the Bible in the same way, I doubt it. Look at me and the coals :-) I suspect that people read into The Bible what they want to see. How do you know that you are hearing the message of God and not your own? (or Satans for that matter?)